2025/08/14 by Li, Jinlu
#47H10 #49J52 #49J53 #90C31 #FOS: Mathematics #Functional Analysis (math.FA)
paper · doi:10.48550/arxiv.2508.11118
We continue the study in part I for calculating the Frechet derivatives and Mordukhovich derivatives (coderivatives) and covering constants for single-valued mappings in Euclidean spaces (It is part I). In this paper, we particularly consider a norm-reserved mapping f: R2 to R2 that is defined by (1.1) in Section 1. We will find the precise solutions of Frechet derivative and Mordukhovich derivative at every point in R2. By using these solutions, we will find the covering constant for this mapping f is exact 1 at every point in R2 except the origin. Then we extend this mapping to R4. Finally, by using the covering constant for f and by applying the Arutyunov Mordukhovich and Zhukovskiy Parameterized Coincidence Point Theorem, we will solve some parameterized equations.